Power-saving mechanisms for 802.11 clients

Details Power-saving mechanisms for 802.11 clients Power-saving mechanisms for 802.11 clients

2011-07-12

2011-07-12

Rampuria, Sharad (Department: 2617)

Multiplex communications

Communication over free space

Signaling for performing battery saving

C370S328000, C370S338000, C455S574000, C455S041200

Reexamination Certificate

active

07978637

ABSTRACT:
The station does not wake up for the beacon TIM if there is periodic uplink data with period less than or equal to the tolerance for downlink delay. If the station has no uplink data for at least a service interval (period of the stream), it wakes up to listen to the TIM. It continues to do so until either uplink or downlink data arrives. If the TIM indicates downlink data buffered, and if the station continues to have no uplink data, it starts waking tip at the service interval and sends null frames uplink, in order to signal that it is awake and ready to receive downlink data. If uplink data is generated, the station will send the uplink frame instead of the null frame.

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